Cast-metal wheel



Aug. 3i,1 92@.,

L. 1:5. KAY

CAST METAL WHEEL Fil ed Nov.

relatively lightweight.

Lanna omen STATES Parser spice.

LLOYD n. KAY, on Los enennns, CALIFORNIA.

CAST-METAL WHEEL.

Application filed November 4, 1925. Serial No. 66,738;

This invention relates to cast metal wl ie'e'l's and while the invention may be applied in making cast iron wheels, it is particularly applicable to wheels constructed of electric steel. It is now possible with modern elec tric furnacesto' produce steelwhich can be cast in walls one-fourth inch thick and even in'soine cases as thin'as three-sixteenths inch.

The general object of this invention'is to produce a construction for a cast metal;

wheel of disk type which will have sufficient strength to support the relatively heavy loads which must be supported by truck wheels, and which at the same time will be of It is also one of my obj ects to provide a wheel of this type which, due to its construction, will not develop any internal strains in cooling. In doing this, I avoid the necessity for wheels constructed in accordance with my invention.

A further object of the invention is to provide an improved construction for the hub and rim of a disk whe-elwhich will'cooperate to prevent the development of m ternal strains, andas regards the run, will operate to produce a strong and durable seat for the tire-rim.

Further objects of the'invention'will appear hereinafter.

The invention consists in'the novel parts and combination of parts'to be' described hereinafter, all of which contribute to pro duce an eliicient cast metal wheel. H j

A preferred embodiment of the invention is described in the following specification,

while the broad scope of the invention is pointed out in the appended claims.

In the drawings Figure 1 is a front elevation in partial section through a cast metal wheel'embodying my invention the sectlon being talren about inthe plane of line 1-1 of Figure 2.

Figure 2 is a side elevationofthe'wheel shown in'Figure l broken away and shown partially in sect1on,the section being taken about in the plane of the l1ne2-2 of Figure v1.

I11 practicing my invention I construct the wheel with two walls 1, 1; which I space apart to form'the body of the wheelj These walls have outwardly flared extensions'2 at their outer edges, which are preferably curved extensions, seeFigure 1;" these ex tensions project laterally and terminate in annealing the cylindrical rim portions 3, the outer faces 3? of which constitute tire-rim seats.

Around the'wheel, the opposite flaredportions 2 are united integrally, preferably by bridge nieinbers or bridge-webs 4,thati s to say, these bridge-webs on the face of the Wheel ly in radial planes, see In order to prevent strains in the wheel when the cast wheel is cooling, the hub portion 5 of the wheel. is preferably not made continuous through the wheel but I form this hub portion by providing two central openings 6 in the walls 1 at this point. At least one of these openings at its edge is lip 7 which wall and lie substantial- Flgure 2;

projects toward the opposite dle plane of the wheel. This tread band extends continuously around thewhee'l and is united integrally with the bridge-webs 41 i This band 9 ispreferably T-shapediii cross section as also'ar'e'the bridge-webs.

At a point between tliecent'ral opening 6 and the; rim of the wheel, the walls 1, 1, areintegrally connected, preferably by an annular web 10, and this web may be provid edwith openings 11', which not only lighten the wheelbut facilitate the support of the coreswhen the wheel isbeing cast.

In order toincrease the strength of the developing internal provided with a circumferential I prefer to provide two such li s 7 which project toward each other but wiichf a wide face, I prefer extend transversely rim'portion 3 andrelieveit of strains from 1;

the load carried by the wheel, I prefer to provide a plurality of small ribs 12 which project from the inner edges of the rim portions 3. The outer edges of' these ribs are flush with the outer faces 3 so that they have the effect of increasing the width for the seat of the tire-ri1n at this point. Fur thermore, the inner edges of these ribs are united integrally to the flared or curved portions 2 so that a portion of the weight or load which is carried by the rim is imparted directly to the flared extension' of the wheel and this operates'to relieve the rim portion 3 of considerable strain.

VVith a wheel constructed as described it will be evident that the face of the wheel presents a plurality of large openings 13, that is to say the rim of the wheel is of skeleton form. At the same time it presents an ample seat for the tire-rim. In this way I produce a very light and serviceable cast metal wheel. By reason of the gap8 in the hub portion 5 of the wheel, it will be evident that when the annular web 11- cools it cannot develop any internal strains in the hub portion 5; at the same time it will be evident that the flared webs 4i in cooling cannot develop any internal strains in the diskwalls '1 or in any part of the wheel.

It'is understood that the embodiment of the invention described herein is only one of the many embodiments this invention may take, and I do not wish to be limited in the practice of the invention, norin the claims, to the particular embodiment set forth.

What I claim is 7 1'. A cast metal wheel of disk type having two walls spaced apart to form the body of the wheel, said walls having outwardly flared extensions at their outer edges projecting laterally and having cylindrical rim portions, the faces of which constitute tirerim seats, said wheel having transverse bridge-websuniting the flared extensions at a plurality of points around the wheel, and a continuous tread-band located substantially in th middle plane of the wheel connected to said bridge-webs and constituting a seat for the middle portion of the tirerim. a

2. A cast metal wheel of disk typevhaving two walls spaced apart to form the body of the wheel,.;each ofsaid walls having a central opening, the edge of at least one of said openings ward the opposite wall, said walls having outwardly flared extensions at their outer edges projecting laterally and having cylindrical rim portions, the faces of which constitute tire-rim seats, said wheel having transverse bridgewebs uniting the flared extensions at a plurality of points around the wheel, and a continuoustread-band located substantially in the middle plane of the wheel connected to said bridge-webs and constituting a seat for the middle portion of the tire-rim.

3. A cast metal wheel of disk type having two walls spaced apart to form'the body of the wheel, each of said walls having a central opening to receive a separate hub or the arm of an axle, the edge of each opening having a lip projecting toward the 0pposite wall, said walls having outwardly flared extensions at their outer edges pro-- jecting laterally and having cylindrical rim po'i'tions, the faces of which constitute tirerim seats, said wheel having transverse bridge-webs unlting the flared extenslons at havlng a lip proj'ectingto-r a plurality of points around the wheel, and a continuous tread-band located substantially in'the middle plane of the wheel connected tosaid bridge-webs and constituting a seat for the middle portion of the tire-rim. 4. A cast metal wheel of disk type having two wallsspaced apart to form the body of the wheel, each of said walls having a central opening, the edge of at least one of said openings having a lip projecting toward the opposite wall, said walls having outwardly flared extensions at their outer edges projecting laterally and having cylindrical rim portions, the faces of which constitute tirerim seats, said wheel having transverse bridge-webs uniting the flared extensions at a plurality of points around the wheel, a continuous tread-band located substantially in the middleplane of the wheel connected to said bridge-webs and constituting a seat for themiddle portion of the tire-rim, and said wheel further having an annular web extending around the wheel and connecting the side walls at a point between the central openings and'the rim of the wheel.

5. A cast metal wheel of disk type having two walls spaced apart to form the body of the wheel, each of said walls having a central opening to receive a separate hubior the arm of an axle, said walls having outwardly flared extensions at their outer edges proj ecting laterally and having cylindrical rim portions, the faces of which constitute tire-rim seats, transverse webs uniting the flared extensions at a plurality of points around the wheel,'and an annular web extending around the wheel and connecting the side walls at a point between the central openings and the rim of the wheel. I I

6. A cast metal wheel of disk type having two walls spaced apart to form the body of thevwheeheach of said walls having a central opening to receive a separate hub or the arm of an axle, said, walls having outwardly flared extensions at their outer edges projecting laterally and having cylindrical rim portions, the faces of which constitute tire-rim seats, transverse webs uniting the flared extensions at a plurality of points around the wheel, an annular web extending around the wheel and connecting the side walls at a point" between the central openings and the rim of the wheel, said wheel further having a plurality or ribs extending from the inner edges of the rim portions toward the middle plane of the wheel, the outer faces of said ribs being substantially flush with the cylindrical faces of the rim portions, and operating to increase the width of support for the tire-rim, and having their inner edges united to the flared extensions so as to impart a portion of the load to the flared extensions and relieve the cylindrical rim portions of aportion of the load.

7 A cast metal wheel of disk type having two walls spaced apart to form the body of the Wheel, said walls having central openv ings to receive a separate hub member or the arm of an axle, said walls being unconnected with each other at said openings, and having outwardly flared extensions at their outer edges projecting laterally and having cylindrical rim portions, the faces of which constitute tire-rim seats, said wheel having transverse bridge-webs uniting the flared extensions at a plurality of points around the Wheel.

8. A cast metal Wheel of disk type having two walls spaced apart to form the body of the wheel, said Walls having outwardly flared extensions at their outer edges projecting laterally and having cylindrical rim portions the faces of which constitute tirerim seats, and integral connecting members uniting the flared extensions around the wheel.

Signed at Los Angeles, 29th day of October, 1925.

LLOYD D. KAY.

California, this 

